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Finding the Fourth Proportional to 387,755.12, 581,632.90 and 177,245.44

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Solution

The fourth proportional to 387,755.12, 581,632.90 and 177,245.44 is: 265,868.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,755.12 : 581,632.90 = 177,245.44 : x
  2. Step 2: Convert to fraction form
    387,755.12/581,632.90 = 177,245.44/x
  3. Step 3: Cross multiply
    387,755.12x = 581,632.90 × 177,245.44
  4. Step 4: Simplify right side
    387,755.12x = 103,091,777,381.78
  5. Step 5: Solve for x
    x = 103,091,777,381.78/387,755.12
  6. Step 6: Final answer
    x = 265,868.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.